I discovered that you can get stuck in M&R's secret armory. I had the dude open up for it and I got the vendor screen. After that I went past him to see if I could grab anything through the bars (only hats). As I turned around I discovered that the dude left (he went upstairs to sleep) and the wall had closed. I reloaded the autosave on entering the store of course. Just thought I'd alert the dev's that it's possible.

Interesting, I added this to the Bug thread where I would like all these to be put.